Lenacapavir-induced capsid damage uncovers HIV-1 genomes emanating from nuclear speckles
Following cell entry, HIV-1 capsids enter the nucleus by passage through nuclear pores and reach nuclear speckles with subsequent uncoating of the reverse-transcribed genome and its integration into speckle-associated chromatin domains. Here, we characterized the ultrastructure of HIV-1 subviral com...
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| Hauptverfasser: | , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
1 December 2025
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| In: |
The EMBO journal
Year: 2026, Jahrgang: 45, Heft: 2, Pages: 449-470 |
| ISSN: | 1460-2075 |
| DOI: | 10.1038/s44318-025-00652-5 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1038/s44318-025-00652-5 Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1038/s44318-025-00652-5 
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| Verfasserangaben: | Thorsten G. Müller, Severina Klaus, Vojtech Zila, Bojana Lucic, Carlotta Penzo, Svenja L. Nopper, Gonen Golani, Maria Anders-Össwein, Vera Sonntag-Buck, Anke-Mareil Heuser, Ulrich S. Schwarz, Vibor Laketa, Marina Lusic, Barbara Müller, and Hans-Georg Kräusslich |
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| 245 | 1 | 0 | |a Lenacapavir-induced capsid damage uncovers HIV-1 genomes emanating from nuclear speckles |c Thorsten G. Müller, Severina Klaus, Vojtech Zila, Bojana Lucic, Carlotta Penzo, Svenja L. Nopper, Gonen Golani, Maria Anders-Össwein, Vera Sonntag-Buck, Anke-Mareil Heuser, Ulrich S. Schwarz, Vibor Laketa, Marina Lusic, Barbara Müller, and Hans-Georg Kräusslich |
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| 520 | |a Following cell entry, HIV-1 capsids enter the nucleus by passage through nuclear pores and reach nuclear speckles with subsequent uncoating of the reverse-transcribed genome and its integration into speckle-associated chromatin domains. Here, we characterized the ultrastructure of HIV-1 subviral complexes in nuclei of primary monocyte-derived macrophages and cell lines using live-cell imaging, super-resolution microscopy, and correlative light and electron tomography in the absence and presence of capsid-targeting inhibitors Lenacapavir and PF74. Capsid-like structures containing viral DNA, as well as broken capsids, clustered in nuclear speckles and were displaced from speckles by drug treatment. This was accompanied by alteration of the nuclear capsid structure, with electron-dense protrusions emanating from the narrow end of capsid cones and exposure of integration-competent genomic HIV-1 DNA. Our data indicate that synthesis of genomic dsDNA can be completed inside the closed HIV-1 capsid, and speckle-associated factors could regulate genome uncoating. This may ensure that genome uncoating occurs at optimal sites for integration into transcriptionally active chromatin. The results also shed further light on the mechanism of action of Lenacapavir. | ||
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